Debug EF4 SaveChanges in WCF service hosted by IIS

Question

In the existing code the size of transactionEntities is growing and in the almost final statement we\'ve got

transactionEntities.SaveChanges(System.Data.Objects.S

Answer 1

For question #1 - you can turn on diagnostics on your WCF service

In your web (or app) config:

1) Add System.Diagnostics section anywhere under configuration element. You can replace path with which ever path you want the files to be stored at.

<system.diagnostics>
    <sources>
      <source name="System.ServiceModel.MessageLogging" switchValue="Warning, ActivityTracing">
        <listeners>
          <add type="System.Diagnostics.DefaultTraceListener" name="Default">
            <filter type="" />
          </add>
          <add name="ServiceModelMessageLoggingListener">
            <filter type="" />
          </add>
        </listeners>
      </source>
      <source name="System.ServiceModel" switchValue="Warning, ActivityTracing" propagateActivity="true">
        <listeners>
          <add type="System.Diagnostics.DefaultTraceListener" name="Default">
            <filter type="" />
          </add>
          <add name="ServiceModelTraceListener">
            <filter type="" />
          </add>
        </listeners>
      </source>
    </sources>
    <sharedListeners>
      <add initializeData="C:\temp\services_messages.svclog" type="System.Diagnostics.XmlWriterTraceListener, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" name="ServiceModelMessageLoggingListener" traceOutputOptions="LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId, Callstack">
        <filter type="" />
      </add>
      <add initializeData="C:\temp\services_tracelog.svclog" type="System.Diagnostics.XmlWriterTraceListener, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" name="ServiceModelTraceListener" traceOutputOptions="LogicalOperationStack, DateTime, Timestamp, ProcessId, ThreadId, Callstack">
        <filter type="" />
      </add>
    </sharedListeners>
  </system.diagnostics>

2) Under system.ServiceModel add following:

<diagnostics wmiProviderEnabled="false">
      <messageLogging logEntireMessage="true" logMalformedMessages="true" logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" />
</diagnostics>

3) Under C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\ start SvcTraceViewer.exe. Load both message trace (services_messages.svclog) and service trace log (services_tracelog.svclog). You can either drag drop files in the tool or open one then add another

4) Look for red bold letters for a problem.

If you want to make your experience editing the WCF configuration more palatable you can use SvcConfigEditor.exe which is found under same folder as SvcTraceViewer.exe (#3). Just open the config file and you should see Diagnostics folder which will allow you to start/stop and configure diagnostics.